Amid reports indicating that individuals in the UK derive over half of their daily caloric intake from ultra-processed foods, many are striving to make healthier dietary choices.
However, making informed selections in supermarkets can be a challenge. So-called “healthy” options often contain hidden sugars, saturated fats, and additives, cleverly concealed behind attractive marketing and appealing packaging.
Brands frequently utilize buzzwords and enticing imagery to attract health-conscious consumers, complicating the task of identifying genuinely beneficial products.
To help clarify the landscape, we consulted a nutrition expert to pinpoint the worst offenders and vital red flags that consumers should look for on food labels.
1. Certain Breakfast Cereals
A bowl of fiber-rich cereal is often celebrated as a great way to start the day; however, numerous pre-packaged varieties pack more than just grains like corn, wheat, oats, and rice.
“Breakfast cereals often come with health halos due to terms like ‘wholegrain,’ ‘energy,’ and ‘fortified,’ which create the impression of a nutrient-dense meal,” shares nutritionist Rob Hobson, author of Unprocess Your Life.
“Nonetheless, popular cereals often have high sugar content and low fiber levels, which can lead to increased hunger shortly after consumption.”
For instance, well-known children’s cereals like Kellogg’s Frosties and Crunchy Nut contain 11 grams of sugar per 30-gram serving.
“This is a crucial meal time when you should aim to include whole grains, dairy, and fruits,” advises Hobson. “If you prefer cereals, check the packaging for high fiber content and low sugar levels for stable energy throughout the morning.”
2. Flavoured Yoghurts
Replacing cake and cookies with fruit yogurt might seem like a healthier choice, but the packaging of these dessert-style yogurts can be quite deceptive.
“Low-fat or nearly fat-free yogurts may appear to be a lighter option, but they often contain added sugars or sweetened fruit purees to compensate for flavor loss when the fat is removed,” warns Hobson.
“While they can still provide beneficial calcium, the health benefits can be negated by additives and excessive sugar,” he notes.
There are healthier, homemade alternatives. Hobson suggests opting for plain Greek yogurt and topping it with fresh fruit, nuts, and a drizzle of honey for a nutritious and satisfying treat.
Flavoured low-fat yoghurts can be high in sugar and additives.
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3. Plant-Based Meat Alternatives
The health concerns associated with consuming red meat, along with its environmental impact and implications for animal welfare, have motivated many to opt for plant-based alternatives to their favorite meat products.
Although research shows that a varied plant-based diet can promote gut health, some processed meat substitutes may not be as beneficial—especially the highly engineered options that have gained popularity recently.
Hobson comments, “Many meat-free burgers and sausages are laden with salt, often contain lower protein levels, and include more additives than one might expect. While they can help reduce meat consumption for convenience, variety is essential.”
He adds, “Relying on these alternatives day after day can deprive you of nutrient-rich whole protein sources like beans, lentils, or tofu, which are more nutritious for a plant-based diet.”
4. Protein Bars
With many striving to achieve a lean, defined physique, the term ‘protein’ has quickly become one of the most compelling keywords in grocery stores.
However, “Most of the colorful protein bars lining the checkout aisles are essentially candy in disguise,” warns Hobson. “The protein they offer is frequently paired with sugary syrups, flavorings, or sweeteners, and even some ‘natural’ bars list glucose syrup and chocolate as primary ingredients.”
While these bars can be convenient snacks or suitable for post-workout refueling, Hobson advises treating them as indulgences rather than everyday essentials.
“As a guideline, seek out bars containing at least 15 grams of protein and minimal added sugars,” he recommends.
Protein bars are easy to grab and snack on when you’re famished between meetings or on the go, but they’re often packed with sugar.
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5. Fruit Smoothies
“Smoothies may seem healthy since they are derived from fruit and many are, but others are composed of concentrated fruit purees that are excessively sweet,” Hobson points out.
“These are often offered in 500ml bottles, which can lead to consuming a lot of free sugars—not ideal for dental health or weight management if consumed in large amounts instead of water or other sugar-free options,” he adds.
If you’re pairing a smoothie with your eggs, Hobson recommends selecting a beverage made with real fruit, limiting the serving size to 150ml to prevent blood sugar spikes and subsequent energy crashes.
6. Deli Counter Meats and Pre-Packed ‘Lean’ Lunch Meats
Ham sandwiches have been a lunchbox classic for years, yet processed meats are surprisingly among the worst hidden ultra-processed foods (UPFs) on the market.
“Lean sliced meats may appear as a high-protein lunchtime option, but many varieties are loaded with sodium and contain preservatives called nitrates. The World Health Organization (WHO) has correlated frequent consumption with detrimental long-term health outcomes,” states Hobson.
Currently, the WHO classifies processed meats as a Group 1 carcinogen, indicating strong evidence of its link to certain cancers, particularly colorectal cancer, with a daily portion of 50g increasing your risk by 18%.
While the occasional sandwich or salad with a good quality slice of ham is not overly concerning, Hobson suggests diversifying your protein sources: “Mix in eggs, canned fish, beans, or leftover roast chicken to create a more balanced meal.”
Common Red Flags on Food Labels
Be on the lookout for these label indicators, which may signify that a food product is ultra-processed:
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Sugar listed among the first three ingredients
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Multiple names for sugar, such as glucose syrup, maltodextrin, and fructose
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‘Low-fat’ claims (as fat is often replaced with sugar or starch)
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High sodium levels (beware of products exceeding 1.5 grams of salt per 100g)
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Presence of artificial sweeteners or flavor enhancers
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Use of vegetable oils like palm, hydrogenated, or refined seed oils
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Unrealistically small serving sizes that obscure high calorie or sugar amounts
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Health buzzwords such as ‘natural,’ ‘fit,’ or ‘clean’ with no nutritional support
